Mining apparatus



Dec. 16, 1 924' M. P. HOLMES MINING APPAR Filed AUE- 1922 Patented Dec. 16, 1924.

PATENT OFFICE.

UNITED STATES MORRIS I. HOLMES, OF CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

MINING APPARATUS.

Application filed August 4, 1922.

T 0 all whom it may concern Be it known that I, Morons P. HOLMES, a citizen of the United States, residing at Claremont, in the county of Sullivan and State of New Hampshire, have invented certain new and useful Improvements in Minng Apparatus, of which the following is a full, clear, and exact specification.

lWIy invention relates to mining apparatus.

It has for its object to provide an improved and simplified abutment or jack device whereby the flexible feeding means of a mining machine may be securely anchored and maintained at a level above the mine bottom and whereby if desired the level may be varied.

In the accompanying drawings I have shown for purposes of illustration one embodiment which my invention may assume in practice.

In these drawings Fig. 1 is a side elevation of this form of my improved device, the base frame being shown in longitudinal section.

Fig. 2 is a plan view of the frame therefor.

In this illustrative disclosure it will be noted that I have shown a jack 1, herein of a usual rigid and adjustable construction, having one end engageable with a mine surface and its opposite end adapted to clamp down one end of a flexible feeding member 2 of a mining machine, herein shown in the form of a chain, the member 2 being maintained above the bottom by improved cooperating means hereinafter described.

In my improved construction it will be observed that the lower end of the jack 1 passes down through one or more suitable openings 3, herein two and adapted to receive the jack prongs, in an elongated base frame 4 disposable on the mine bottom, and that the flexible feed member 2 extends upward and angularly from this point of fixation and then laterally toward the source of pull, being held in this elevated position by the free end of a supplemental shorter jack member 5 disposed at an acute angle to the member 1 and herein so located that if its free end was extended by a line, the latter would intersect the jack 1 at a point intermediate its ends and just below a point midway between the latter. As shown, this member 5 is pivoted at 6 on the opposite end of the frame 4 between flanges 7 0n angle Serial No. 579,755.

irons disposed parallel to one another and connected at their opposite ends to form a base frame.

In the use of this construction, it will be observed that a pull on the flexible feeding member 2 acts upon the members 1 and 5 in such manner as to increase the resistance to the pull, the cooperating members 1 and 4 being forced more firmly against the mine surfaces. It will further be evident that by varying the length of the member 5 by any suitable means, as by the use of a telescopic jack construction such as shown or the substitution of different members 5, the eflective height of the support or anchor may be varied within limits. Further, it will be observed that as a result of my improved construction, it is possible to provide an exceedingly simple mechanism adapted to be utilizable with an ordinary jack as found in any mine, the only supplemental mechanism necessary comprising the frame 4 which is of simple and inexpensive construction and the supplemental jack member 5 which is of similar construction.

\Vhile I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. An abutment device comprising a main and a supplemental jack disposed angularly relative to one another, and a base member carrying said acks.

2. An abutment device comprising a main and a supplemental jack, and a base mem ber carrying said jacks, one of said jacks being pivoted thereto and the other removable at will, and each being disposed angularly relative to the other.

3. An abutment device comprising a main and a supplemental jack disposed angularly relative to one another, and a base member to which said supplemental jack is pivoted having an aperture receiving one end of said first mentioned ack.

l. In a abutment device, a base member, an upright jack therefor disposed angularly relative thereto, and a supplemental act:

)ivoted on said base member and extending irom its pivot to a point intermediate the ends of said first mentioned jack.

F. In an abutment device, a base member having an aperture therein, an upright ack disposed angularly relative thereto and seated in said aperture, and a supplemental jack pivoted in front thereof on said base member and extending from its pivot to a point intermediate the ends of said first mentioned ack.

6. In an abutment device, a base member, a jack pivoted thereto, and disposable at an acute angle relative there-to When a flexible feeding member engages the free end of said jack, and means for jacking the free end of a flexible member and said base member to the bottom.

T. In an abutment device, a base member, and a pivoted jack member thereon disposable. at an angle relative thereto and having a flexible feed member engaging portion on its free end, said base member having provision for receiving a main jack at a point in rear of said jack-pivot.

8. In an abutment device, a base member, and a pivoted jack member thereon disposable at an angle relative thereto and having a flexible feed member engaging portion on its free end, said base member comprising a plurality of rigidly connected parallel members between which said first mentioned jack is pivoted and having provision at the opposite end from the pivot thereof for receiving a cooperating jack.

9. In an abutment device, a base member having apertures therein, a jack adapted to engage an extraneous abutment having on end thereof carried in said apertures, means for connecting a flexible member having a free end to said jack, and means permitting the varying of the elevation of the free end of said flexible member.

10. In an abutment device, an elongated base member, a plurality of jacks carried thereon, and means for connecting a flexible feeding member extending at ditferent elevations to said jacks.

11. In an abutment device, a base, a holding jack, and a pivoted jack for varying the elevation of a member connected to saidholdi-ng jack.

12. In an abutment device, a plurality of angularly disposed jacks, and means for connecting: a flexible feeding member extending in variable elevations to said jacks.

13. In an abutment device, a plurality of angularly disposed jacks, and means forconnecting a flexible feeding member eX- tending in different parallel planes to said jacks.

In testimony whereof I affix my signature.

MORRIS. P. HOLMES. 

